Computational modeling of pollutants in furnaces of pulverized coal boilers of the republic of Kazakhstan

Abstract

Ecological situation in the world has forced to close coal plants. And renewable energy sources, which are characterized by volatility, mayn't be enough to provide countries with energy, so transition to “green energy” will be difficult. Kazakhstan's energy industry will gradually switch from coal to gas so that emissions correspond to European standards, but coal will remain the main fuel for the time being due to its cheapness. In this regard power units of energy plants require creating and mastering of new environmentally friendly coal technologies to reduce the negative impact on the environment.Pollutants formation depends on fuel type and conditions of burning. Thus a detailed study of the heat-mass transfer processes in combustion system is relevant. In proposed work, computational modelling of pollutants formation during burning of low-grade coal (A∼40%) was carried out. Proposed work is aimed at defining of the new physical, mathematical and chemical models, which were adapted and implemented into the CFD code. The results of the study showed a good correspondence of the numerical experiment with natural data. The proposed model can be useful in any energy systems running on low-grade fuel to obtain relevant data that contribute to the control of environmental pollution.